/** * 添加缓存key * @param $key * @return bool */public static function addCacheKey($key) {    $data = self::readLog();    if(in_array($key, $data)){        return true;    }    $data[] = $key;    file_put_contents(LOG_PATH.'cache_keys.json', json_encode($data));}/** * 删除缓存 * @param $key * @param bool $like 是否删除相似的key * @return bool */public static function removeCacheKey($key, $like = false){    $data = self::readLog();    if(in_array($key, $data)){        return true;    }    foreach ($data as $p => $k){        if($like){            if(strpos($k, $key) !== false){                unset($data[$p]);                S($k, NULL);            }        }else{            if($k == $key){                unset($data[$p]);                S($k, NULL);            }        }    }    return true;}private static function readLog(){    $json = file_get_contents(LOG_PATH.'cache_keys.json');    if($json){        return json_decode($json, true);    }    return array();}